D4 SE Exec. 3.0TFSI or 3.0TDI?

[kungfupanda]

I've just taken a deposit on my W221 S320 and will be looking at getting back into the Audi fold after having a couple of V10 S6s and an Audi TT back in my younger days.

My budget is around £16k-£18k which gets me roughly a 2011 with less than 80k miles.

There are two cars on the radar at the moment. Both SE Exec, both in Ice Silver with black leather. One is diesel the other has the V6 supercharged petrol unit similar to the one in the B8 S4.

Both are the same spec except the diesel has Bose and the petrol hasn't.

I don't do that many miles, I live in Manchester City Centre and work in the centre too so fuel economy isn't really an issue which is why I'm drawn to the petrol. Also, the supercharged engine takes to tuning quite well and spending around £1500 at MRC on a Stage 2 map and revised supercharger pulley can get me to near 400bhp.

The only downside to the petrol would be upon resale. Surely a diesel A8 would be quicker to sale when compared to a petrol one?

Do any of you guys have any views?